Discontinued Operations (Details) (USD $)	12 Months Ended	1 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 SunCor	Dec. 31, 2011 SunCor	Dec. 31, 2010 SunCor	Aug. 31, 2011 APSES	Jun. 30, 2010 APSES	Dec. 31, 2011 APSES	Dec. 31, 2010 APSES
Discontinued Operations
After-tax gain from discontinued operations			$ 41,973,000				$ 10,000,000	$ 25,000,000
Revenue		37,000,000	157,000,000		1,000,000	30,000,000			36,000,000	127,000,000
Income (loss) before taxes	(10,000,000)	19,000,000	41,000,000	(10,000,000)	(2,000,000)	(10,000,000)			21,000,000	51,000,000
Income (loss) after taxes	$ (5,838,000)	$ 11,363,000	$ 25,365,000	$ (6,000,000)	$ (1,000,000)	$ (6,000,000)			$ 12,000,000	$ 31,000,000

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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